Home / 278,781,658.48-385,112,096.76-223,395,008.68

Finding the Fourth Proportional to 278,781,658.48, 385,112,096.76 and 223,395,008.68

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Solution

The fourth proportional to 278,781,658.48, 385,112,096.76 and 223,395,008.68 is: 308,600,360.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,781,658.48 : 385,112,096.76 = 223,395,008.68 : x
  2. Step 2: Convert to fraction form
    278,781,658.48/385,112,096.76 = 223,395,008.68/x
  3. Step 3: Cross multiply
    278,781,658.48x = 385,112,096.76 × 223,395,008.68
  4. Step 4: Simplify right side
    278,781,658.48x = 86,032,120,198,473,200
  5. Step 5: Solve for x
    x = 86,032,120,198,473,200/278,781,658.48
  6. Step 6: Final answer
    x = 308,600,360.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.